What is the smallest particle of an element that still has the chemical properties of that element?
- AA proton
- BAn electron
- CA nucleus
- DAn atom
What is the smallest particle of an element that still has the chemical properties of that element?
What does the prefix "milli-" mean?
Which method separates two liquids with different boiling points, such as alcohol and water?
Which gas forms when hydrochloric acid reacts with calcium carbonate?
Яке твердження про елементи однієї групи правильне?
0,5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?
What fraction of a radioactive isotope remains after three half-lives?
Повітряна кулька містить 2,0 L газу за 300 K. За сталого тиску її нагрівають до 450 K. Який новий об'єм?
Повні покрокові розв’язки: тренуйте цю тему на examproblems.com.